Home / 1,393,127.10-1,922,381.10-781,304.94

Finding the Fourth Proportional to 1,393,127.10, 1,922,381.10 and 781,304.94

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Solution

The fourth proportional to 1,393,127.10, 1,922,381.10 and 781,304.94 is: 1,078,125.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,393,127.10 : 1,922,381.10 = 781,304.94 : x
  2. Step 2: Convert to fraction form
    1,393,127.10/1,922,381.10 = 781,304.94/x
  3. Step 3: Cross multiply
    1,393,127.10x = 1,922,381.10 × 781,304.94
  4. Step 4: Simplify right side
    1,393,127.10x = 1,501,965,849,992.63
  5. Step 5: Solve for x
    x = 1,501,965,849,992.63/1,393,127.10
  6. Step 6: Final answer
    x = 1,078,125.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.